blob: 6bca9889f9cbb368e7df8094ef3feb30079dcfac [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_HISTORY_HISTORY_TAB_HELPER_H_
#define CHROME_BROWSER_HISTORY_HISTORY_TAB_HELPER_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
namespace history {
struct HistoryAddPageArgs;
class HistoryService;
}
class HistoryTabHelper : public content::WebContentsObserver,
public content::WebContentsUserData<HistoryTabHelper> {
public:
~HistoryTabHelper() override;
// Updates history with the specified navigation. This is called by
// OnMsgNavigate to update history state.
void UpdateHistoryForNavigation(
const history::HistoryAddPageArgs& add_page_args);
// Returns the history::HistoryAddPageArgs to use for adding a page to
// history.
history::HistoryAddPageArgs CreateHistoryAddPageArgs(
const GURL& virtual_url,
base::Time timestamp,
int nav_entry_id,
content::NavigationHandle* navigation_handle);
private:
explicit HistoryTabHelper(content::WebContents* web_contents);
friend class content::WebContentsUserData<HistoryTabHelper>;
// content::WebContentsObserver implementation.
void DidFinishNavigation(
content::NavigationHandle* navigation_handle) override;
void DidFinishLoad(content::RenderFrameHost* render_frame_host,
const GURL& validated_url) override;
void TitleWasSet(content::NavigationEntry* entry) override;
void WebContentsDestroyed() override;
// Helper function to return the history service. May return null.
history::HistoryService* GetHistoryService();
// True after navigation to a page is complete and the page is currently
// loading. Only applies to the main frame of the page.
bool is_loading_ = false;
// Number of title changes since the loading of the navigation started.
int num_title_changes_ = 0;
// The time that the current page finished loading. Only title changes within
// a certain time period after the page load is complete will be saved to the
// history system. Only applies to the main frame of the page.
base::TimeTicks last_load_completion_;
DISALLOW_COPY_AND_ASSIGN(HistoryTabHelper);
};
#endif // CHROME_BROWSER_HISTORY_HISTORY_TAB_HELPER_H_